isis topology tag-value

Function

The isis topology tag-value command configures an administrative tag value for an interface.

The undo isis topology tag-value command deletes the configured administrative tag value.

By default, no administrative tag value is configured on an interface.

Format

isis topology topology-name tag-value tag [ level-1 | level-2 ]

undo isis topology topology-name tag-value [ tag ] [ level-1 | level-2 ]

Parameters

Parameter	Description	Value
tag	Specifies an administrative tag value for the interface.	The value is an integer ranging from 1 to 4294967295.
level-1	Indicates the administrative tag value of the Level-1 interface.	-
level-2	Indicates the administrative tag value of the Level-2 interface.	-
topology topology-name	Specifies the name of a topology instance.	The value is a string of 1 to 31 case-sensitive characters without spaces. The value must start with a letter (a to z or A to Z, case sensitive) and can contain numbers, hyphens (-), or underlines (_). When double quotation marks are used around the string, spaces are allowed in the string.

Views

100GE interface view, 10GE interface view, 25GE sub-interface view, 25GE interface view, 400GE interface view, 40GE interface view, 50GE sub-interface view, 50GE interface view, Eth-Trunk interface view, FlexE interface view, GE optical interface view, GE electrical interface view, Global VE sub-interface view, Loopback interface view, VE sub-interface view, VE interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
isis	write

Usage Guidelines

Usage Scenario

An administrative tag carries administrative information about IP address prefixes. Administrative tags can advertise IP address prefixes in the IS-IS area to control routes, simplifying management.

The isis topology tag-value command is used to configure an administrative tag value for an interface, and the tag can be used to filter out unwanted routes.

Prerequisites

An IS-IS process has been created using the isis command.

Precautions

Only when the IS-IS cost type is wide, wide-compatible, or compatible, an advertised LSP carries the administrative tag value. The cost type can be configured using the cost-style command.

Example

# Set the administrative tag value of GigabitEthernet 0/1/0 in topology red to 77.

<HUAWEI> system-view
[~HUAWEI] ip topology red
[*HUAWEI] isis 1
[*HUAWEI-isis-1] cost-style wide
[*HUAWEI-isis-1] topology red topology-id 10
[*HUAWEI-isis-1-topology-red] quit
[*HUAWEI-isis-1] quit
[*HUAWEI] interface GigabitEthernet 0/1/0
[*HUAWEI-GigabitEthernet0/1/0] isis enable 1
[*HUAWEI-GigabitEthernet0/1/0] ip topology red enable
[*HUAWEI-GigabitEthernet0/1/0] isis topology red
[*HUAWEI-GigabitEthernet0/1/0] isis topology red tag-value 77